Enough non-perishables and frozen foods for at least a month, maybe longer, but the last week may require some creativity to make a palatable meal. As for refrigerated foods, there's plenty of block and shredded cheese/yogurt, etc. with a code of mid-April or later. I bought an 18-pack of eggs last night. Enough milk for perhaps a week.
The REAL panic buying in my area didn't start until yesterday. For the past 2 or 3 weeks, yes, sometimes water and toilet paper, etc. were out of stock or sparse, but they got replenished. Yesterday and based on some photos DD sent today from Walmart, many entire aisles were getting wiped out.
I'll try Monday or Tuesday for some fresh produce and other items. Maybe by then all the hoarders will be satiated and will be staying away.